obama acknowledged the political reality. >> there are regional differences here. and we should respect those. >> reporter: political analysts say the measures will be hard to get through congress. >> and that's just not because of republican opposition to it. there are many democrats up in swing states where gun rights are quite important and are seen as part of the culture. >> reporter: but on chicago's south side today, young voices called on adults to do something. >> we have to stop the violence. it sounds different coming from adults than it does from another teen, and i say to you, we have to stop it now. >> reporter: senior administration officials say in his state of the union address, the president will talk about gun violence and immigration, but they say the speech will focus largely on the economy, and creating jobs for the middle class. lester? >> all right, kristen. we want to remind folks leading up to the state of the union address, nbc news is launching a special week-long look at gun violence. gun ownership. and gun legislation. it's called flash